Apparatus for cleansing felts



E. D. BENNETT.

APPARATUS FOR CLEANSING FELTS.

APPLICATION man APR.29, 1919.

; 1,395,219 Patented Oct. 25, 1921.

6 A a NVVEIVJTOA? I a a? fl'rrok/vay UNITED STATES PATENT OFFICE.

APPARATUS FOR CLEANSING FELTS.

Application filed. April 29, 1919.

To all whom it may concern:

Be it known that I, EDWARD D. BENNETT, a citizen of the United States ofAmerica, and resident of Pulaski, in the county of Oswego, in the Stateof New York, have invented new and useful Improvements in the Apparatufor Cleansing Felts, of which the following, taken in connection withthe accompanying drawings, is a full, clear, and exact description.

This invention relates to an improved method of and apparatus forcleaning felts used in paper making machines.

These felts are rather thick and heavy, and after a short period of usebecome clogged with paper fiber and other foreign matter to such anextent as to renderthem inefficient for further use, and in someinstances are laid aside as waste or subjected to a laborious, expensiveand time consuming method of cleansing, and the main object of mypresent invention is to provide simple and efiicient means whereby thefelts may be thoroughly cleaned from foreign matter while in the machineor at least while laid flatwise upon suitable supports.

In other words, I have sought to blow the foreign matter from the feltby steam or other fluid under pressure entering a hollow perforatedplate which is movable at will across one or bot-h surfaces (usually thelower surface) in such manner that jets of steam will be projected fromsaid perforations through the felt preferably in a direction opposite tothat by which the paper fiber or other foreign matter enters the poresof the felt.

Other objects and uses relating to specific parts of the apparatus willbe brought out in the following description:

In the drawings,-

Figure 1 is a perspective View of a device for carrying out the objectof my invention.

Fig. 2 is an enlarged longitudinal sectional view of the same device asapplied to a piece of felt shown by dotted lines.

Specification of Letters Patent.

Patented Oct. 25, 1921.

Serial No. 293,484.

As illustrated, the apparatus consists of a hollow rectangular plate -lhaving one side thereof provided with a series of perforations -2, theremaining walls being imperforate except that one end thereof isprovided with an inlet 3- to which is connected a rigid supply pipesection -4- having a flexible extension -5 adapted to be connected to asource of supply such as steam or other fluid under pressure.

Secured to the opposite end of the plate l is an extension 6-- whichtogether with the pipe 4E constitute handles by which the plate 1- maybe moved across the felt as -A- shown by dotted lines in Fig. 2 with itsperforated side adjacent said felt so that the steam entering theinterior of the plate 1- will be projected in numerous fine jets throughthe pores of the felt to expel any fiber or other foreign matter whichmay have lodged therein.

In Fig. 2, the device is shown as applied to the upper surface of thefelt but obviously may be reversed and applied to the lower face thereoffor blowing the steam through the felt from opposite directions, whennecessary, to assure a perfect cleansing of the felt.

JV hat I claim is:

An apparatus for cleaning paper machine felts comprising a substantiallyrectangular box having a flat foraminous side and means for conducting acleansing fluid under pressure into said box and through the foraminathereof, said box being portable and movable along and against the sideof the felt opposite that into which the material to be removed enters.

In witness whereof I have hereunto set my hand this 25th day of April,1919.

EDWARD D. BENNETT.

Witnesses E. L. CLARK, C. Box.

